My little sister Aimi is an adorable girl whose dimples appear on her cheeks whenever she flashes a bright smile. She always gazes at me with captivating eyes, and her clingy, affectionate nature constantly leaves me yearning for more. Since our parents are both working, the time before dinner in the evening becomes my prime time with Aimi. Her small, underdeveloped chest seems like a symbol of her childhood innocence. When she calls out to me in her cute, childish voice, "Onii-chan♪," my heart trembles so much that I feel like buying her anything she wants. Every day with sweet little Aimi is filled with excitement and anticipation.